# PropertyMapping


Maps a property from an interface asset model to a property in the asset model where the interface is applied.

## Contents


 ** assetModelPropertyId **   <a name="iotsitewise-Type-PropertyMapping-assetModelPropertyId"></a>
The ID of the property in the asset model where the interface is applied.  
Type: String  
Length Constraints: Minimum length of 13. Maximum length of 139.  
Pattern: `^(?!00000000-0000-0000-0000-000000000000)[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$|^externalId:[a-zA-Z0-9_][a-zA-Z_\-0-9.:]*[a-zA-Z0-9_]+`   
Required: Yes

 ** interfaceAssetModelPropertyId **   <a name="iotsitewise-Type-PropertyMapping-interfaceAssetModelPropertyId"></a>
The ID of the property in the interface asset model.  
Type: String  
Length Constraints: Minimum length of 13. Maximum length of 139.  
Pattern: `^(?!00000000-0000-0000-0000-000000000000)[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$|^externalId:[a-zA-Z0-9_][a-zA-Z_\-0-9.:]*[a-zA-Z0-9_]+`   
Required: Yes

## See Also


For more information about using this API in one of the language-specific Amazon SDKs, see the following:
+  [Amazon SDK for C\$1\$1](https://docs.amazonaws.cn/goto/SdkForCpp/iotsitewise-2019-12-02/PropertyMapping) 
+  [Amazon SDK for Java V2](https://docs.amazonaws.cn/goto/SdkForJavaV2/iotsitewise-2019-12-02/PropertyMapping) 
+  [Amazon SDK for Ruby V3](https://docs.amazonaws.cn/goto/SdkForRubyV3/iotsitewise-2019-12-02/PropertyMapping)